I could brevet you could brevet he could brevet we could brevet you could brevet they could brevet
Forma con V-ing
I could be breveting you could be breveting he could be breveting we could be breveting you could be breveting they could be breveting
Perfecto
I could have breveted you could have breveted he could have breveted we could have breveted you could have breveted they could have breveted
Perfecto con V-ing
I could have been breveting you could have been breveting he could have been breveting we could have been breveting you could have been breveting they could have been breveting
Negación
Forma simple
I couldn't brevet you couldn't brevet he couldn't brevet we couldn't brevet you couldn't brevet they couldn't brevet
Forma con V-ing
I couldn't be breveting you couldn't be breveting he couldn't be breveting we couldn't be breveting you couldn't be breveting they couldn't be breveting
Perfecto
I couldn't have breveted you couldn't have breveted he couldn't have breveted we couldn't have breveted you couldn't have breveted they couldn't have breveted
Perfecto con V-ing
I couldn't have been breveting you couldn't have been breveting he couldn't have been breveting we couldn't have been breveting you couldn't have been breveting they couldn't have been breveting
Forma interrogativa
Forma simple
could I brevet? could you brevet? could he brevet? could we brevet? could you brevet? could they brevet?
Forma con V-ing
could I be breveting? could you be breveting? could he be breveting? could we be breveting? could you be breveting? could they be breveting?
Perfecto
could I have breveted? could you have breveted? could he have breveted? could we have breveted? could you have breveted? could they have breveted?
Perfecto con V-ing
could I have been breveting? could you have been breveting? could he have been breveting? could we have been breveting? could you have been breveting? could they have been breveting?
Forma interro-negativa
Forma simple
couldn't I brevet? couldn't you brevet? couldn't he brevet? couldn't we brevet? couldn't you brevet? couldn't they brevet?
Forma con V-ing
couldn't I be breveting? couldn't you be breveting? couldn't he be breveting? couldn't we be breveting? couldn't you be breveting? couldn't they be breveting?
Perfecto
couldn't I have breveted? couldn't you have breveted? couldn't he have breveted? couldn't we have breveted? couldn't you have breveted? couldn't they have breveted?
Perfecto con V-ing
couldn't I have been breveting? couldn't you have been breveting? couldn't he have been breveting? couldn't we have been breveting? couldn't you have been breveting? couldn't they have been breveting?